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A car of mass 1000 kg travelling at 32 m...

A car of mass 1000 kg travelling at `32 ms^(-1)` dashes into the rear of a truck of mass 8000 kg , moving in the same direction with a velocity of `4 ms^(-1)` After the collision the car bounces with a velocity of `8 ms^(-1)` What is the velocity of the truck after the impact ?

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